The output voltage of this circuit is approximately four times the supply voltage. The circuit is from an Electronics Now April 1995. The output current is very low.
With this circuit, a relay can be activated from an alternating signal with frequency up to a few...
With this circuit the visually impaired can easily locate important places inside the house, such...
In the figure we have the way to use the transistors of an old-paired pair as a trigger circuit. The...